LifeCycleHook (Apache TinkerPop 3.7.2 API)

```
public interface LifeCycleHook
```
Provides a method in which users can hook into the startup and shutdown lifecycle of Gremlin Server. Creating an instance of this interface in a Gremlin Server initialization script enables the ability to get a callback when the server starts and stops. The hook is guaranteed to execute once at in both cases.

Author:

Stephen Mallette (http://stephen.genoprime.com)

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static class`	`LifeCycleHook.Context`	Contains objects from the server that might be useful to scripting during the startup and shutdown process.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onShutDown(LifeCycleHook.Context c)`	Called when the server is shutdown.
`void`	`onStartUp(LifeCycleHook.Context c)`	Called when the server starts up.

- Method Detail
  - onStartUp
```
void onStartUp(LifeCycleHook.Context c)
```
    Called when the server starts up. The graph collection will have been initialized at this point and all initialization scripts will have been executed when this callback is called.
  - onShutDown
```
void onShutDown(LifeCycleHook.Context c)
```
    Called when the server is shutdown.